#include <Servo.h>
#include <Keypad.h>
#include <Wire.h>
#include <LiquidCrystal_I2C.h>

//---------------- LCD ----------------
LiquidCrystal_I2C lcd(0x27, 16, 2);

//---------------- Servo ----------------
Servo serrure;
const int servoPin = 11;

//---------------- Buzzer ----------------
const int buzzer = 12;

//---------------- Clavier 4x4 ----------------
const byte ROWS = 4;
const byte COLS = 4;

char keys[ROWS][COLS] = {
  {'1','2','3','A'},
    {'4','5','6','B'},
      {'7','8','9','C'},
        {'*','0','#','D'}
        };

        byte rowPins[ROWS] = {9,8,7,6};
        byte colPins[COLS] = {5,4,3,2};

        Keypad keypad = Keypad(makeKeymap(keys), rowPins, colPins, ROWS, COLS);

        //---------------- Mot de passe ----------------
        String password = "2580";
        String input = "";

        int essais = 0;

        void setup() {

          lcd.init();
            lcd.backlight();

              serrure.attach(11);
                serrure.write(0); // Porte verrouillée

                  pinMode(buzzer, OUTPUT);
                    digitalWrite(buzzer, LOW);

                      lcd.setCursor(0,0);
                        lcd.print("Serrure");
                          lcd.setCursor(0,1);
                            lcd.print("Entrez Code");
                            }

                            void loop() {

                              char key = keypad.getKey();

                                if(key){

                                    // Effacer
                                        if(key=='C'){
                                              input="";
                                                    lcd.clear();
                                                          lcd.print("Code efface");
                                                                delay(1000);

                                                                      lcd.clear();
                                                                            lcd.print("Entrez Code");
                                                                                  lcd.setCursor(0,1);
                                                                                      }

                                                                                          // Validation
                                                                                              else if(key=='D'){

                                                                                                    if(input==password){

                                                                                                            lcd.clear();
                                                                                                                    lcd.print("Acces Autorise");

                                                                                                                            serrure.write(90);

                                                                                                                                    delay(5000);

                                                                                                                                            serrure.write(0);

                                                                                                                                                    lcd.clear();
                                                                                                                                                            lcd.print("Porte Fermee");

                                                                                                                                                                    essais=0;
                                                                                                                                                                          }

                                                                                                                                                                                else{

                                                                                                                                                                                        essais++;

                                                                                                                                                                                                lcd.clear();
                                                                                                                                                                                                        lcd.print("Code Incorrect");

                                                                                                                                                                                                                tone(buzzer,1000,300);

                                                                                                                                                                                                                        delay(1500);

                                                                                                                                                                                                                                if(essais>=3){

                                                                                                                                                                                                                                          lcd.clear();
                                                                                                                                                                                                                                                    lcd.print("!!! ALARME !!!");

                                                                                                                                                                                                                                                              for(int i=0;i<15;i++){

                                                                                                                                                                                                                                                                          tone(buzzer,1200);
                                                                                                                                                                                                                                                                                      delay(200);

                                                                                                                                                                                                                                                                                                  noTone(buzzer);
                                                                                                                                                                                                                                                                                                              delay(200);

                                                                                                                                                                                                                                                                                                                        }

                                                                                                                                                                                                                                                                                                                                  essais=0;
                                                                                                                                                                                                                                                                                                                                          }

                                                                                                                                                                                                                                                                                                                                                }

                                                                                                                                                                                                                                                                                                                                                      input="";

                                                                                                                                                                                                                                                                                                                                                            delay(1000);

                                                                                                                                                                                                                                                                                                                                                                  lcd.clear();
                                                                                                                                                                                                                                                                                                                                                                        lcd.print("Entrez Code");
                                                                                                                                                                                                                                                                                                                                                                            }

                                                                                                                                                                                                                                                                                                                                                                                // Saisie des chiffres
                                                                                                                                                                                                                                                                                                                                                                                    else{

                                                                                                                                                                                                                                                                                                                                                                                          input += key;

                                                                                                                                                                                                                                                                                                                                                                                                lcd.setCursor(0,1);

                                                                                                                                                                                                                                                                                                                                                                                                      for(int i=0;i<input.length();i++)
                                                                                                                                                                                                                                                                                                                                                                                                              lcd.print("*");
                                                                                                                                                                                                                                                                                                                                                                                                                  }

                                                                                                                                                                                                                                                                                                                                                                                                                    }

                                                                                                                                                                                                                                                                                                                                                                                                                    }